[INFO] cloning repository https://github.com/mpilipov/gradbench
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mpilipov/gradbench" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmpilipov%2Fgradbench", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmpilipov%2Fgradbench'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 939adc78e84ecee0c50f4621475f945bd621d4c4
[INFO] checking mpilipov/gradbench against eca445e5ae4a6679cc27d3a09106ce245e13a5a6 for pr-162478
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmpilipov%2Fgradbench" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/mpilipov/gradbench
[INFO] finished tweaking git repo https://github.com/mpilipov/gradbench
[INFO] tweaked toml for git repo https://github.com/mpilipov/gradbench written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/mpilipov/gradbench on toolchain eca445e5ae4a6679cc27d3a09106ce245e13a5a6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+eca445e5ae4a6679cc27d3a09106ce245e13a5a6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/mpilipov/gradbench already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+eca445e5ae4a6679cc27d3a09106ce245e13a5a6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded timeout-readwrite v0.4.0
[INFO] [stderr]   Downloaded windows-link v0.1.0
[INFO] [stderr]   Downloaded similar-asserts v1.7.0
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[INFO] [stderr]   Downloaded either v1.14.0
[INFO] [stderr]   Downloaded console v0.15.10
[INFO] [stderr]   Downloaded similar v2.7.0
[INFO] [stderr]   Downloaded anyhow v1.0.96
[INFO] [stderr]   Downloaded serde v1.0.218
[INFO] [stderr]   Downloaded serde_derive v1.0.218
[INFO] [stderr]   Downloaded cc v1.2.16
[INFO] [stderr]   Downloaded serde_json v1.0.139
[INFO] [stderr]   Downloaded bstr v1.11.3
[INFO] [stderr]   Downloaded libc v0.2.170
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:8683fc1fc2eb5c9ac98e0d076ab094b2ffac7f99da555d2b6a2e27f346de2ec7" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] fd73a4296138bf52f8f863d7a73e233f76a5c982d13169a14819e0673774f954
[INFO] running `Command { std: "docker" "start" "fd73a4296138bf52f8f863d7a73e233f76a5c982d13169a14819e0673774f954", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fd73a4296138bf52f8f863d7a73e233f76a5c982d13169a14819e0673774f954", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "fd73a4296138bf52f8f863d7a73e233f76a5c982d13169a14819e0673774f954" "/opt/rustwide/cargo-home/bin/cargo" "+eca445e5ae4a6679cc27d3a09106ce245e13a5a6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fd73a4296138bf52f8f863d7a73e233f76a5c982d13169a14819e0673774f954", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-w" "/opt/rustwide/workdir" "--user" "0:0" "fd73a4296138bf52f8f863d7a73e233f76a5c982d13169a14819e0673774f954" "/opt/rustwide/cargo-home/bin/cargo" "+eca445e5ae4a6679cc27d3a09106ce245e13a5a6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.93
[INFO] [stderr]    Compiling unicode-ident v1.0.17
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[INFO] [stderr]    Compiling rustversion v1.0.19
[INFO] [stderr]    Compiling serde v1.0.218
[INFO] [stderr]    Compiling getrandom v0.3.1
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[INFO] [stderr]     Checking colorchoice v1.0.3
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[INFO] [stderr]     Checking unicode-segmentation v1.12.0
[INFO] [stderr]     Checking anstyle-query v1.1.2
[INFO] [stderr]    Compiling anyhow v1.0.96
[INFO] [stderr]     Checking regex-syntax v0.8.5
[INFO] [stderr]     Checking fastrand v2.3.0
[INFO] [stderr]    Compiling serde_json v1.0.139
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[INFO] [stderr]     Checking yansi v1.0.1
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[INFO] [stderr]    Compiling strum_macros v0.27.1
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[INFO] [stderr]     Checking gradbench v0.0.0 (/opt/rustwide/workdir/crates/gradbench)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> crates/gradbench/src/intermediary.rs:406:5
[INFO] [stdout]     |
[INFO] [stdout] 406 |     mut log: impl Write,
[INFO] [stdout]     |     ----^^^
[INFO] [stdout]     |     |
[INFO] [stdout]     |     help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> crates/gradbench/src/intermediary.rs:406:5
[INFO] [stdout]     |
[INFO] [stdout] 406 |     mut log: impl Write,
[INFO] [stdout]     |     ----^^^
[INFO] [stdout]     |     |
[INFO] [stdout]     |     help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `LoggingReader` is never constructed
[INFO] [stdout]   --> crates/gradbench/src/intermediary.rs:59:8
[INFO] [stdout]    |
[INFO] [stdout] 59 | struct LoggingReader<R: Read> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> crates/gradbench/src/util.rs:74:23
[INFO] [stdout]    |
[INFO] [stdout] 74 | pub fn lock<T>(mutex: &Mutex<T>) -> MutexGuard<T> {
[INFO] [stdout]    |                       ^^^^^^^^^     ^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                       |
[INFO] [stdout]    |                       the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 74 | pub fn lock<T>(mutex: &Mutex<T>) -> MutexGuard<'_, T> {
[INFO] [stdout]    |                                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> crates/gradbench/src/util.rs:121:19
[INFO] [stdout]     |
[INFO] [stdout] 121 |     pub fn handle(&mut self, f: Box<dyn FnOnce() + Send>) -> CtrlCHandler {
[INFO] [stdout]     |                   ^^^^^^^^^ the lifetime is elided here      ^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 121 |     pub fn handle(&mut self, f: Box<dyn FnOnce() + Send>) -> CtrlCHandler<'_> {
[INFO] [stdout]     |                                                                          ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `LoggingReader` is never constructed
[INFO] [stdout]   --> crates/gradbench/src/intermediary.rs:59:8
[INFO] [stdout]    |
[INFO] [stdout] 59 | struct LoggingReader<R: Read> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> crates/gradbench/src/util.rs:74:23
[INFO] [stdout]    |
[INFO] [stdout] 74 | pub fn lock<T>(mutex: &Mutex<T>) -> MutexGuard<T> {
[INFO] [stdout]    |                       ^^^^^^^^^     ^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                       |
[INFO] [stdout]    |                       the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 74 | pub fn lock<T>(mutex: &Mutex<T>) -> MutexGuard<'_, T> {
[INFO] [stdout]    |                                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> crates/gradbench/src/util.rs:121:19
[INFO] [stdout]     |
[INFO] [stdout] 121 |     pub fn handle(&mut self, f: Box<dyn FnOnce() + Send>) -> CtrlCHandler {
[INFO] [stdout]     |                   ^^^^^^^^^ the lifetime is elided here      ^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 121 |     pub fn handle(&mut self, f: Box<dyn FnOnce() + Send>) -> CtrlCHandler<'_> {
[INFO] [stdout]     |                                                                          ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 29.02s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: nix v0.29.0
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 2`
[INFO] running `Command { std: "docker" "inspect" "fd73a4296138bf52f8f863d7a73e233f76a5c982d13169a14819e0673774f954", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fd73a4296138bf52f8f863d7a73e233f76a5c982d13169a14819e0673774f954", kill_on_drop: false }`
[INFO] [stdout] fd73a4296138bf52f8f863d7a73e233f76a5c982d13169a14819e0673774f954
